31.02MX521de

Lexmark MX521de error 31.02: Paper Jam Fix

The Lexmark MX521de error 31.02 represents a jam alert near the feeding path. It triggers when paper fails to arrive at the registration sensor at the scheduled time. Learning how to fix error 31.02 on MX521de is straightforward and usually requires checking the paper tray and internal path.

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Common causes

  • 1Paper tray guides set too loosely or tightly.
  • 2Humid paper sticking together.
  • 3Worn or dusty feed/pickup rollers.
  • 4Paper fragments stuck inside the registration sensor.

Solutions

Quick Diagnostics

This error frequently points to the paper tray area. Check if the paper stack is neatly aligned and that no pages have been pulled in skewed.

Step-by-Step Solution

  1. Tray Access: Slide out the main tray and clear any crumpled pages.
  2. Front Inspection: Open the front cover to ensure no scraps are lingering near the toner cartridge.
  3. Clearance: Pull stuck sheets gently in the direction of the paper path.
  4. Initialize: Close the machine and allow it to re-initialize.

Prevention and Maintenance

Store paper in a dry place to avoid humidity-related jams. Keep the tray guides properly adjusted. Periodically clean the rubber pickup rollers using a lint-free cloth and a drop of water.

When to Call a Technician

If the machine continues to throw 31.02 errors with clean, properly loaded paper, the pickup roller assembly may need to be replaced.

Ficha técnica del equipo

  • Technology: Laser
  • Speed: 46 ppm
  • Connectivity: USB, Ethernet
  • Consumable compatible: 52D series (52D00A0, 52D00G0)
  • Maintenance: Paper path cleaning as needed
  • Drivers / firmware official

Steps to follow

  1. 1

    Remove Tray

    Pull out the main paper tray and remove any wrinkled or misaligned sheets.

  2. 2

    Internal Path

    Open the front door and gently pull out any paper scrap found near the imaging unit.

  3. 3

    Secure

    Close all doors firmly ensuring no paper fragments remain.

  4. 4

    Clear Error

    The system will automatically recognize that the path is clear.

Frequently asked questions

Error 31.02 is a specific paper path jam alert, usually occurring when paper fails to feed correctly into the registration area.

Frequent jams are often caused by improper paper storage, incorrect tray size settings, or worn-out feed rollers.

Always fan the paper stack before loading, ensure the side guides are snug, and periodically wipe the pickup rollers with a damp cloth.

While it doesn't affect toner life directly, frequent jams can spread loose toner inside the printer, leading to dirty prints.

Lexmark MX521de error 31.02: Paper Jam Fix | Vimazdev